The 4 main ways that the mind works are sensation/thinking and feeling /intuition - the former more the realm of the conscious (c - rational), the latter of the unconscious (u - nonrational)
Thinking and feeling are categories of perception; intuition and sensation of apprehension
c (shadow + anima) + c (ego) = Self.
The unconscious (u) is compensatory/complementary to the conscious (c).